A welding auxiliary jig based on bridge conduction

Abstract

The utility model discloses a kind of welding auxiliary jigs based on bridge type conduction, it is related to welding jig technical field, including electrically conductive bridge, support, turnover mechanism and lifting mechanism, wherein, turnover mechanism includes turnover cylinder and turnover panel, lifting mechanism includes lifting cylinder and transmission frame, electrically conductive bridge is fixedly installed on the side surface of transmission frame, the utility model principle is simple, based on bridge type conduction is designed, for the welding work under the auxiliary narrow space, welding strength can be guaranteed, with simple structure, easy to operate etc. Characteristics, simultaneously, component dismounting is convenient, electrode head has replaceable function characteristics, and it is convenient to replace, help to control and reduce production cost, with practicality and economy.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, and in particular to a welding auxiliary fixture based on bridge conductivity. Background Technology

[0002] Sliding door commercial vehicles refer to commercial vehicles equipped with sliding doors. Their side sliding doors open horizontally without taking up external space, and the large opening facilitates the entry and exit of personnel and goods. They also have high structural strength, anti-pinch safety designs, good sealing and sound insulation, and a more stylish appearance. They are widely used in special vehicle modification scenarios such as business reception, logistics distribution, passenger transportation, and ambulances.

[0003] In the production process of sliding door commercial vehicles, welding is a critical process, but it also faces many challenges. Taking the JCE3-V model side sliding door as an example, there are two welding points at the connection between the lower sliding door rail and the side plate of the lower sliding door guide rail, and one welding point at the connection between the lower sliding door rail and the upper plate of the lower sliding door guide rail, for a total of three welding points that need to be welded (e.g. Figure 6 (As shown). However, since the inner groove of the sliding rail is only 19mm wide, conventional welding clamps are difficult to operate in depth, and the customized non-standard welding clamps are prone to deformation due to insufficient strength, making it difficult to guarantee the welding quality and seriously affecting the production schedule. In addition, since most of the workpieces are galvanized, it further increases the difficulty of ensuring the welding strength. Summary of the Invention

[0004] In view of the problems disclosed in the background art, this utility model provides a welding auxiliary fixture based on bridge conductivity.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A welding auxiliary fixture based on bridge conductivity, assembled on a positioning fixture, is characterized by comprising a conductive bridge, a bracket, a flipping mechanism, and a lifting mechanism.

[0007] The bracket is fixedly installed on the panel of the positioning fixture, and a hinge is provided at its upper end.

[0008] The flipping mechanism controls the flipping of the lifting mechanism and the conductive bridge, including a flipping cylinder and a flipping panel. The flipping cylinder is vertically set and the transmission shaft is vertically upward. Its lower end is fixedly installed with the panel of the positioning fixture, and its upper end is provided with a hinge joint, which is hinged to one end of the flipping panel. The flipping panel and the hinge joint are hinged to the same side of the hinge joint and fixedly connected to the hinge component.

[0009] The lifting mechanism controls the lifting of the conductive bridge and includes a lifting cylinder and a transmission frame. The lifting cylinder is vertically fixed on the flip panel and its transmission shaft faces downward. The transmission frame is fixedly connected to the transmission shaft of the lifting cylinder, and the conductive bridge is fixedly installed on the side of the transmission frame.

[0010] The above-mentioned welding auxiliary fixture based on bridge conductivity is characterized in that the conductive bridge is a conductor, its upper end is insulated and fixedly installed with the transmission frame, and its lower end is provided with two ends, namely a conductive contact and an electrode contact, the conductive contact and the electrode contact are conductively connected, and the electrode contact is equipped with an electrode head.

[0011] The above-mentioned welding auxiliary fixture based on bridge conductivity is characterized in that the number of conductive bridges is multiple, and the multiple conductive bridges are installed at intervals on the transmission frame.

[0012] The above-mentioned welding auxiliary fixture based on bridge conductivity is characterized in that an insertion hole is provided on one end of the electrode contact surface facing the welding position, and a fastening hole is provided on its side. The fastening hole communicates with the insertion hole and is threadedly connected to a fastening rod. The electrode head is installed at the insertion hole position and is positioned and fastened by the fastening rod.

[0013] The above-mentioned welding auxiliary fixture based on bridge conductivity is characterized in that a notch is provided on one side of the upper end of the bracket, and a positioning fixture is provided at the notch. The positioning fixture includes a lower positioning seat and an upper positioning seat. The lower positioning seat is fixedly connected to the bracket, and the upper positioning seat is fixedly installed on the transmission frame.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] This utility model discloses a welding auxiliary fixture based on bridge conductivity, belonging to the field of welding fixture technology. It includes a conductive bridge, a bracket, a flipping mechanism, and a lifting mechanism. The flipping mechanism includes a flipping cylinder and a flipping panel, and the lifting mechanism includes a lifting cylinder and a transmission frame. The conductive bridge is fixedly installed on the side of the transmission frame. This utility model has a simple principle and is designed based on bridge conductivity. It is used to assist welding work in confined spaces and can ensure welding strength. It has the characteristics of simple structure and easy operation. At the same time, the components are easy to disassemble and assemble, and the electrode head has the function of being replaceable and easy to replace. It helps to control and reduce production costs, and has both practicality and economy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention.

[0017] Figure 2 This is a perspective view of the present utility model.

[0018] Figure 3 This is a schematic diagram of a conductive bridge.

[0019] Figure 4 A three-dimensional view of the conductive bridge (electrode head and fastening rod omitted).

[0020] Figure 5This is a schematic diagram of the positioning fixture.

[0021] Figure 6 This is a schematic diagram of the solder joint.

[0022] Figure 7 This is a top view of the present invention in the state of installation of the positioning fixture.

[0023] The reference numerals in the attached drawings are as follows: 1. Positioning fixture; 2. Conductive bridge; 3. Bracket; 4. Hinge; 5. Tilting cylinder; 6. Tilting panel; 7. Hinge joint; 8. Lifting cylinder; 9. Transmission frame; 10. Conductive contact platform; 11. Electrode contact platform; 12. Electrode head; 13. Insertion hole; 14. Fastening hole; 15. Fastening rod; 16. Lower positioning seat; 17. Upper positioning seat; 18. Positioning fixture; A. Welding auxiliary fixture; B. Workpiece to be welded; C. Weld point. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] As shown in the figure, this embodiment discloses a welding auxiliary fixture based on bridge conductivity, which is assembled on positioning fixture 1. Specifically, the welding auxiliary fixture A includes a conductive bridge 2, a bracket 3, a flipping mechanism and a lifting mechanism.

[0027] The bracket 3 is fixedly installed on the panel of the positioning fixture 1, and its upper end is provided with a hinge 4 that is hinged to it; the flipping mechanism is used to control the flipping of the lifting mechanism and the conductive bridge 2, including a flipping cylinder 5 and a flipping panel 6. The flipping cylinder 5 is vertically set and the transmission shaft is vertically upward. Its lower end is fixedly installed on the panel of the positioning fixture 1, and its upper end is provided with a hinge joint 7, which is hinged to one end of the flipping panel 6. The flipping panel 6 and the hinge joint 7 are hinged on the same side and fixedly connected to the hinge 4. At this time, the transmission shaft of the flipping cylinder 5 performs a vertical extension and retraction movement, which can control the flipping panel 6 to rotate in the same vertical plane.

[0028] In addition, the lifting mechanism controls the lifting of the conductive bridge 2, including a lifting cylinder 8 and a transmission frame 9. The lifting cylinder 8 is vertically fixed on the flip panel 6. As the flip panel 6 moves, the transmission shaft of the lifting cylinder 8 faces vertically downward (in the initial state when the flip panel 6 is not rotated). The transmission frame 9 is fixedly connected to the transmission shaft of the lifting cylinder 8. The conductive bridge 2 is fixedly installed on the side of the transmission frame 9 and moves vertically up and down with the extension and retraction of the transmission shaft of the lifting cylinder 8.

[0029] Before welding, the workpiece B to be welded is clamped and fixed by the positioning fixture 1 (at this time, the flip panel 6 is in the open state). When the workpiece B to be welded is positioned and assembled, the flipping mechanism works, the flipping panel 6 rotates, and the conductive bridge 2 is positioned above the workpiece B to be welded. After it is rotated into place, the lifting mechanism works to control the conductive bridge 2 to fall into the inner groove of the workpiece B to be welded, and then the welding operation can be performed.

[0030] Example 2

[0031] This embodiment discloses a welding auxiliary fixture based on bridge-type conductivity, wherein the conductive bridge 2 is a conductor, and its upper end is insulated and fixedly installed with the transmission frame 9. In order to adapt to the welding environment (the inner groove width is limited and the space is narrow), the lower end of the conductive bridge 2 is provided with two ends, namely a conductive contact 10 and an electrode contact 11. The conductive contact 10 and the electrode contact 11 are electrically connected, and a gap is left between them for the inner groove to pass through. The electrode contact 11 is also equipped with an electrode head 12.

[0032] When the conductive bridge 2 falls into the inner groove of the workpiece B to be welded, the electrode head 12 contacts the workpiece B to be welded and is located in the welding position. When the welding program is started, the welding torch contacts the conductive contact 10 and transmits current to the electrode head 12 through the electrode contact 11, so that a weld nugget (weld point) is formed at the welding position, thereby completing the welding. For the welding of galvanized parts, only a two-pulse welding method is needed to complete the welding while ensuring the strength of the weld point.

[0033] Example 3

[0034] This embodiment discloses a welding auxiliary fixture based on bridge-type conductivity. In order to achieve the purpose of multi-point welding, the number of conductive bridges 2 can be multiple, and multiple conductive bridges 2 can be installed at intervals on the transmission frame 9.

[0035] Furthermore, considering that the zinc layer easily adheres to the spot-welded electrode head during welding, leading to frequent electrode repairs at the conductive bridge 2 welding point and increased replacement costs, this embodiment also designs a disassembly and assembly structure for the electrode head to reduce the overall replacement cost of the conductive bridge 2. Specifically, in this embodiment, the electrode contact plate 11 has an insertion hole 13 on one end facing the welding position, and a fastening hole 14 is provided on its side. The fastening hole 14 communicates with the insertion hole 13 and is threadedly connected to a fastening rod 15. The electrode head 12 is installed in the insertion hole 13 and is positioned and fastened by the fastening rod 15. When the electrode head 12 needs to be replaced, the fastening function of the fastening rod 15 only needs to be released to quickly and conveniently complete the replacement of the electrode head 12.

[0036] Example 4

[0037] This embodiment discloses a welding auxiliary fixture based on bridge conductivity, wherein a notch is provided on one side of the upper end of the bracket 3, and a positioning fixture 18 is provided at the notch for auxiliary positioning of welding. The positioning fixture 18 includes a lower positioning seat 16 and an upper positioning seat 17. The lower positioning seat 16 is fixedly connected to the bracket 3, and the upper positioning seat 17 is fixedly installed on the transmission frame 9.

[0038] When the lifting mechanism is working, as the conductive bridge 2 falls into the inner groove of the workpiece B to be welded, the upper positioning seat 17 simultaneously falls into the inner groove and clamps and positions the workpiece B to be welded between the lower positioning seat 16 and the upper positioning seat 17.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding auxiliary fixture based on bridge-type conductivity, assembled on a positioning fixture (1), characterized in that, Includes a conductive bridge (2), a support (3), a flipping mechanism, and a lifting mechanism; The bracket (3) is fixedly installed on the panel of the positioning fixture (1), and a hinge (4) is provided at its upper end; The flipping mechanism controls the lifting mechanism and the conductive bridge (2) to flip, including a flipping cylinder (5) and a flipping panel (6). The flipping cylinder (5) is vertically set and the transmission shaft is vertically upward. Its lower end is fixedly installed with the panel of the positioning fixture (1). Its upper end is provided with a hinge joint (7), and is hinged to one end of the flipping panel (6) through the hinge joint (7). The flipping panel (6) and the hinge joint (7) are hinged on the same side and fixedly connected to the hinge member (4). The lifting mechanism controls the lifting of the conductive bridge (2), including a lifting cylinder (8) and a transmission frame (9). The lifting cylinder (8) is vertically fixed on the flip panel (6), and its transmission shaft is vertically downward. The transmission frame (9) is fixedly connected to the transmission shaft of the lifting cylinder (8), and the conductive bridge (2) is fixedly installed on the side of the transmission frame (9).

2. The welding auxiliary fixture based on bridge-type conductivity according to claim 1, characterized in that, The conductive bridge (2) is a conductor. Its upper end is insulated and fixedly installed with the transmission frame (9). Its lower end is provided with two ends, namely a conductive contact (10) and an electrode contact (11). The conductive contact (10) and the electrode contact (11) are electrically connected, and the electrode contact (11) is equipped with an electrode head (12).

3. The welding auxiliary fixture based on bridge-type conductivity according to claim 1, characterized in that, The number of conductive bridges (2) is multiple, and multiple conductive bridges (2) are installed at intervals on the transmission frame (9).

4. A welding auxiliary fixture based on bridge-type conductivity according to claim 2, characterized in that, The electrode contact plate (11) has an insertion hole (13) on one end facing the welding position, and a fastening hole (14) is provided on its side. The fastening hole (14) is connected to the insertion hole (13) and is threadedly connected to a fastening rod (15). The electrode head (12) is installed in the insertion hole (13) and is positioned and fastened by the fastening rod (15).

5. A welding auxiliary fixture based on bridge-type conductivity according to any one of claims 1, 2, 3, and 4, characterized in that, The bracket (3) has a notch on one side of its upper end, and a positioning fixture (18) is provided at the notch. The positioning fixture (18) includes a lower positioning seat (16) and an upper positioning seat (17). The lower positioning seat (16) is fixedly connected to the bracket (3), and the upper positioning seat (17) is fixedly installed on the transmission frame (9).

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